/* Reset dasar */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', sans-serif;
}
body {
  min-height: 100vh;
  overflow-x: hidden;
  background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
  position: relative;
  color: white;
}

/* Header */
header {
  background-color: rgba(0, 0, 0, 0.6);
  padding: 20px 40px;
  text-align: center;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  z-index: 1;
  position: relative;
}

header h1 {
  font-size: 2.5em;
  background: linear-gradient(45deg, #00ffff, #00ffcc);
  -webkit-background-clip: text;
  color: transparent;
  animation: glow 3s infinite ease-in-out;
}

/* Navbar */
nav {
  margin-top: 15px;
  display: flex;
  justify-content: center;
  gap: 25px;
  flex-wrap: wrap;
}

nav a {
  color: #ffffff;
  text-decoration: none;
  padding: 10px 20px;
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 30px;
  transition: 0.3s ease;
  backdrop-filter: blur(5px);
}

nav a:hover {
  background-color: rgba(0, 255, 200, 0.2);
  border-color: #00ffcc;
  transform: scale(1.1);
}

/* Container grid */
.menu-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  padding: 40px;
  max-width: 1200px;
  margin: 60px auto;
  z-index: 1;
  position: relative;
}

/* Kotak menu */
.menu-box {
  background: rgba(0, 255, 200, 0.05);
  border: 1px solid rgba(0, 255, 255, 0.2);
  padding: 30px 20px;
  text-align: center;
  font-size: 1.1em;
  border-radius: 20px;
  color: #ffffff;
  backdrop-filter: blur(8px);
  cursor: pointer;
  box-shadow: 0 0 10px rgba(0,255,255,0.2);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

/* Efek hover */
.menu-box:hover {
  transform: translateY(-5px) scale(1.03);
  background: rgba(0, 255, 200, 0.15);
  box-shadow: 0 0 20px rgba(0,255,255,0.5);
  border-color: #00ffee;
}

/* Glow animasi pinggir */
.menu-box::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(120deg, transparent, rgba(0,255,255,0.3), transparent);
  transform: rotate(45deg);
  opacity: 0;
  animation: shimmer 3s infinite;
}

/* Efek shimmer */
@keyframes shimmer {
  0% {
    transform: rotate(45deg) translate(-100%, -100%);
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    transform: rotate(45deg) translate(100%, 100%);
    opacity: 0;
  }
}


/* Container kelas: 2 kolom */
.kelas-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 25px;
  padding: 40px;
  max-width: 1000px;
  margin: 60px auto;
  z-index: 1;
  position: relative;
}

/* Kartu kelas */
.kelas-card {
  background: rgba(0, 255, 200, 0.07);
  border: 1px solid rgba(0,255,255,0.2);
  border-radius: 20px;
  padding: 25px;
  color: white;
  box-shadow: 0 0 10px rgba(0,255,255,0.15);
  backdrop-filter: blur(8px);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.kelas-card:hover {
  transform: translateY(-5px) scale(1.02);
  background: rgba(0, 255, 200, 0.15);
  box-shadow: 0 0 25px rgba(0,255,255,0.4);
}

/* Judul kelas */
.kelas-card h3 {
  font-size: 1.4em;
  margin-bottom: 10px;
  background: linear-gradient(90deg, #00ffff, #00ffcc);
  -webkit-background-clip: text;
  color: transparent;
}

/* Tombol daftar */
.kelas-card button {
  margin-top: 15px;
  padding: 10px 20px;
  background: transparent;
  border: 1px solid #00ffee;
  border-radius: 30px;
  color: #00ffee;
  font-weight: bold;
  cursor: pointer;
  transition: 0.3s ease;
}

.kelas-card button:hover {
  background-color: #00ffee;
  color: #003344;
  box-shadow: 0 0 15px #00ffee;
}
/* Container paket */
.paket-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 25px;
  padding: 40px;
  max-width: 1200px;
  margin: 60px auto;
  position: relative;
  z-index: 1;
}

/* Kartu paket */
.paket-card {
  background: rgba(0, 255, 200, 0.07);
  border: 1px solid rgba(0,255,255,0.2);
  border-radius: 20px;
  padding: 30px 25px;
  color: white;
  box-shadow: 0 0 10px rgba(0,255,255,0.15);
  backdrop-filter: blur(10px);
  transition: 0.3s ease;
  position: relative;
  overflow: hidden;
  text-align: center;
}

.paket-card:hover {
  transform: translateY(-6px) scale(1.02);
  background: rgba(0, 255, 200, 0.12);
  box-shadow: 0 0 25px rgba(0,255,255,0.4);
}

/* Judul */
.paket-card h3 {
  font-size: 1.5em;
  margin-bottom: 20px;
  background: linear-gradient(90deg, #00ffff, #00ffcc);
  -webkit-background-clip: text;
  color: transparent;
}

/* List fitur */
.paket-card ul {
  list-style: none;
  padding: 0;
  margin-bottom: 20px;
  line-height: 1.6;
}

.paket-card ul li {
  padding-left: 20px;
  text-align: left;
  position: relative;
}

.paket-card ul li::before {
  content: '✔';
  color: #00ffee;
  position: absolute;
  left: 0;
}

/* Harga */
.paket-card .harga {
  font-size: 1.2em;
  color: #00ffee;
  margin-bottom: 20px;
}

/* Tombol */
.paket-card button {
  padding: 10px 25px;
  background: transparent;
  border: 1px solid #00ffee;
  border-radius: 30px;
  color: #00ffee;
  font-weight: bold;
  cursor: pointer;
  transition: 0.3s;
}

.paket-card button:hover {
  background-color: #00ffee;
  color: #003344;
  box-shadow: 0 0 15px #00ffee;
}

/* Container Pembayaran */
.pembayaran-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 40px;
  padding: 50px;
  max-width: 1000px;
  margin: 60px auto;
  position: relative;
  z-index: 1;
}

/* Box Umum */
.info-box, .form-box {
  background: rgba(0, 255, 200, 0.06);
  border: 1px solid rgba(0,255,255,0.2);
  border-radius: 20px;
  padding: 30px;
  color: white;
  box-shadow: 0 0 10px rgba(0,255,255,0.15);
  backdrop-filter: blur(10px);
  transition: 0.3s ease;
}

.info-box:hover,
.form-box:hover {
  box-shadow: 0 0 25px rgba(0,255,255,0.4);
  transform: translateY(-5px);
}

/* Judul Box */
.info-box h3, .form-box h3 {
  color: #00ffee;
  font-size: 1.5em;
  margin-bottom: 20px;
}

/* Label Form */
.form-box label {
  display: block;
  margin-top: 15px;
  margin-bottom: 5px;
  font-weight: bold;
}

/* Input Form */
.form-box input[type="text"],
.form-box input[type="file"] {
  width: 100%;
  padding: 10px 15px;
  border: 1px solid #00ffee;
  border-radius: 10px;
  background-color: rgba(255, 255, 255, 0.05);
  color: white;
  outline: none;
  margin-bottom: 10px;
  transition: 0.2s;
}

.form-box input:focus {
  border-color: #00ffaa;
  background-color: rgba(255, 255, 255, 0.1);
}

/* Tombol Submit */
.form-box button {
  margin-top: 20px;
  padding: 10px 25px;
  background: transparent;
  border: 2px solid #00ffee;
  border-radius: 30px;
  color: #00ffee;
  font-weight: bold;
  cursor: pointer;
  transition: 0.3s;
}

.form-box button:hover {
  background-color: #00ffee;
  color: #003344;
  box-shadow: 0 0 15px #00ffee;
}


footer {
  background: rgba(0, 255, 200, 0.05);
  border-top: 1px solid rgba(0, 255, 255, 0.2);
  text-align: center;
  padding: 20px;
  font-size: 0.9em;
  color: #ccc;
  backdrop-filter: blur(4px);
  margin-top: 40px;
}

/* Container Login */
.login-container {
  min-height: 10vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 40px;
  background: transparent;
  position: relative;
  z-index: 1;
}

/* Kotak Login */
.login-box {
  background: rgba(0, 255, 200, 0.06);
  border: 1px solid rgba(0,255,255,0.2);
  border-radius: 20px;
  padding: 40px 30px;
  width: 100%;
  max-width: 400px;
  color: white;
  box-shadow: 0 0 15px rgba(0,255,255,0.15);
  backdrop-filter: blur(10px);
  transition: 0.3s ease;
}

.login-box:hover {
  box-shadow: 0 0 25px rgba(0,255,255,0.4);
  transform: translateY(-5px);
}

/* Judul */
.login-box h2 {
  text-align: center;
  color: #00ffee;
  margin-bottom: 25px;
  font-size: 1.8em;
}

/* Label dan Input */
.login-box label {
  display: block;
  margin-bottom: 6px;
  font-weight: bold;
}

.login-box input[type="email"],
.login-box input[type="password"] {
  width: 100%;
  padding: 12px 15px;
  border-radius: 10px;
  border: 1px solid #00ffee;
  background-color: rgba(255, 255, 255, 0.05);
  color: white;
  margin-bottom: 15px;
  transition: 0.2s;
}

.login-box input:focus {
  border-color: #00ffaa;
  background-color: rgba(255, 255, 255, 0.1);
  outline: none;
}

/* Tombol Login */
.login-box button {
  width: 100%;
  padding: 12px;
  background: transparent;
  border: 2px solid #00ffee;
  border-radius: 30px;
  color: #00ffee;
  font-weight: bold;
  cursor: pointer;
  transition: 0.3s;
  font-size: 1em;
}

.login-box button:hover {
  background-color: #00ffee;
  color: #002b2b;
  box-shadow: 0 0 15px #00ffee;
}

/* Link Daftar */
.register-link {
  margin-top: 20px;
  text-align: center;
  font-size: 0.95em;
  color: #ccc;
}

.register-link a {
  color: #00ffee;
  text-decoration: none;
  font-weight: bold;
}

.register-link a:hover {
  text-decoration: underline;
}